Patents by Inventor Yuji Ikeda

Yuji Ikeda has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20160003657
    Abstract: Measuring equipment is equipped with: a measurement container having formed therein a chamber to be measured, into which a gas to be measured enters, and an inlet passage, through which the gas to be measured is introduced into the chamber to be measured; and a connection structure which, when a plug is not mounted to a plughole that opens into a combustion chamber in an internal combustion engine, connects the inlet passage to the plughole. The measurement container may be provided with a plasma generation device, which generates plasma in the chamber to be measured, or a mounting structure for mounting a heating device, which heats the gas to be measured in the chamber to be measured.
    Type: Application
    Filed: June 19, 2015
    Publication date: January 7, 2016
    Inventors: Yuji IKEDA, Takeshi SERIZAWA, Katsumi UCHIDA
  • Patent number: 9228559
    Abstract: To suppress the reflection of an electromagnetic wave from a load in a plasma generation device 30 that generates electromagnetic wave plasma by emitting the electromagnetic wave to a combustion chamber 10 of an engine 20. The plasma generation device 30 includes an electromagnetic wave oscillator 33 that oscillates the electromagnetic wave, an antenna 15a for emitting the electromagnetic wave oscillated by the electromagnetic wave oscillator to the combustion chamber 10 of the engine 20, and a stub adjustment unit 52, 53. The stub 51 is provided on a transmission line 60 for electromagnetic wave from the electromagnetic wave oscillator 33 to the antenna 15a. While the engine 20 is operating, the stub adjustment unit 52, 53 adjusts a short circuit location on the stub 51 based on the intensity of a reflected wave of the electromagnetic wave reflected from the antenna 15a.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: January 5, 2016
    Assignee: IMAGINEERING, INC.
    Inventors: Yuji Ikeda, Minoru Makita
  • Patent number: 9199194
    Abstract: The objective of the present invention is to reduce the loss in functionality due to the burn-out of micro-coils in a heating device, which uses micro-coils formed of carbon or molecules that include carbon as a principal component for heating a target object located in a space where high-temperature gases flow. The present invention relates to a heating device comprising: a heat producing layer having a micro-coil formed of carbon or molecules that include carbon as a principal component, where the heat producing layer is installed together with the target object located in a target space where high-temperature gases flow; and an electromagnetic (EM)-wave-emitting device that emits EM radiation into the target space. The target object is heated by producing heat in the micro-coil by EM radiation from the EM wave emitting device emitted to the target space. The heating device further comprises a covering layer, which coats the entirety of the heat producing layer.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: December 1, 2015
    Assignee: IMAGINEERING, INC.
    Inventor: Yuji Ikeda
  • Publication number: 20150340206
    Abstract: A plasma generating device that improves plasma generating efficiency can further accommodate changes in plasma generating state because of changes in conditions of surroundings and the like. The plasma generating device is provided with an electromagnetic wave radiating device, which has an electromagnetic wave generating device that oscillates electromagnetic waves and a radiating antenna that radiates electromagnetic waves oscillated by the electromagnetic wave generating device, and a control device that controls the electromagnetic wave radiating device.
    Type: Application
    Filed: May 29, 2015
    Publication date: November 26, 2015
    Inventor: Yuji IKEDA
  • Publication number: 20150322913
    Abstract: The plasma generating device has an electromagnetic wave oscillator that emits electromagnetic waves, and a control device that controls the electromagnetic wave oscillator, said plasma generating device being characterized by being provided with a step-up circuit that causes the electromagnetic waves that have been emitted from the electromagnetic wave oscillator to resonate, thereby generating a high voltage, and a discharge electrode that discharges the high voltage generated by the step-up circuit.
    Type: Application
    Filed: July 22, 2015
    Publication date: November 12, 2015
    Inventor: Yuji IKEDA
  • Patent number: 9151265
    Abstract: An ignition apparatus comprising a microwave device emitting microwave into a combustion/reaction field to increase temperature of a mixture, and create a plasma discharge, in the combustion/reaction field to increase radical concentration, an igniter igniting the mixture in the combustion/reaction field, and a controller controlling the microwave radiator and the igniter. The microwave radiator and igniter are controlled to repeat a cycle wherein the microwave radiator radiates the microwave into the combustion/reaction field to increase the temperature of the mixture in the combustion/reaction field and creates the plasma in the combustion/reaction field. When the igniter ignites the mixture, the microwave radiator creates the plasma in the combustion/reaction field by radiating the microwave into the combustion/reaction field to increase the radical concentration, so that the flame propagation speed is promoted, and the combustion reaction of the mixture is promoted in the combustion/reaction field.
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: October 6, 2015
    Assignee: IMAGINEERING, INC.
    Inventor: Yuji Ikeda
  • Patent number: 9127988
    Abstract: A heat flux measurement apparatus 100 includes a first measurement unit 110, a second measurement unit 120, and heat flux calculation units 130, 140. The first measurement unit 110 measures a temperature difference between a first measurement location and a second measurement location that is lower in temperature than the first measurement location, using a thermocouple 112. The second measurement unit 120 measures a temperature difference between a third measurement location that can be assumed to be isothermal with the first measurement location and a fourth measurement location that can be assumed to be isothermal with the second measurement location, using a thermocouple 122 different in time constant from the thermocouple 112.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: September 8, 2015
    Assignee: IMAGINEERING, INC.
    Inventors: Yuji Ikeda, Atsushi Nishiyama, Takashi Furui
  • Patent number: 9126787
    Abstract: A recording medium setting device includes a base plate on which recording media are set; guide members being moved in a width direction of the recording media that are set on the base plate; a contact detection unit detecting a contact between the guide members and the recording media; an approach unit moving the guide members in a direction so as to sandwich the recording media set on the base plate until the contact detection unit detects the contact between the guide members and the recording media; and an additional approach unit moving the guide members, moved by the approach unit, at a predetermined distance in the direction to squeeze the recording media after the contact detection unit detects the contact between the guide members and the recording media.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: September 8, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroshi Adachi, Yuji Ikeda
  • Patent number: 9122219
    Abstract: A recording medium placement device includes a placement unit in which a recording medium is placed; a guide member provided along an edge of the recording medium and movable in a first direction orthogonal to the edge, the edge being at a first position; a distance detection unit that detects a distance between the guide member and the edge; a drive unit that moves the guide member in the first direction until the distance detection unit detects that the guide member contacts the recording medium; a gap length calculation unit that calculates a length of a gap between the recording medium and the guide member when a movement of the guide member is stopped using a detection output from the distance detection unit; and an adjustment unit that moves the guide member to the edge at the first position based on the length of the gap.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: September 1, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yuji Ikeda, Hiroshi Adachi
  • Patent number: 9111209
    Abstract: An image forming apparatus includes a reception part that receives, from a request part connected via a network, a power supply stop request that designates at least one of a plurality of power supply stop modes for stopping power supply in the image forming apparatus; a selection part that selects, when stopping the power supply in the image forming apparatus is not allowed in the designated power supply stop mode, power supply stop modes from the plurality of power supply stop modes in each of which stopping the power supply in the image forming apparatus is allowed; and a notification part that notifies the request part of the power supply stop mode selected by the selection part.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: August 18, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Yohsuke Utoh, Takashi Soyama, Yuji Ikeda, Genki Watanabe
  • Publication number: 20150226593
    Abstract: The volume measuring device has a coating forming means which, using pyrolytic resin, forms a coating on either part or all of the inner surface of the cylinder; a pressure measuring means which introduces a fixed quantity of gas into the cylinder in which the coating has been formed, or derives a fixed quantity of gas from the inside of the cylinder, and measures the pressure within the cylinder before and after the introduction/derivation; and a volume calculating means which uses the pressure value obtained by the pressure measuring means to calculate the volume of the cylinder.
    Type: Application
    Filed: April 17, 2015
    Publication date: August 13, 2015
    Applicant: IMAGINEERING, INC.
    Inventor: Yuji IKEDA
  • Patent number: 9085428
    Abstract: A multi-feed judging device includes a transporting unit that holds a recording medium between a driving roller and a driven roller, which is driven by the driving roller, and transports the recording medium by rotating the driving roller; a detecting unit that detects a position of the driven roller; a calculating unit that calculates a thickness of the recording medium based on positions of the driven roller when the recording medium is transported and when the recording medium is not transported; a reference value updating unit that updates a reference value of the thickness by using the calculated thickness; a judging unit that judges, using the reference value, whether recording media, which are transported after the reference value was updated, are transported while overlapping each other or not. The calculating unit calculates the thickness when the position is within a predetermined range.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: July 21, 2015
    Assignee: Ricoh Company, Ltd.
    Inventor: Yuji Ikeda
  • Publication number: 20150181687
    Abstract: The antenna structure has a high frequency wave transmission line that transmits a high frequency wave and an emission antenna part for emitting the high frequency wave supplied via the high frequency wave transmission line. The emission antenna part includes a metal antenna having a rod-like shape and a ceramic layer that covers at least a part of the metal antenna.
    Type: Application
    Filed: December 22, 2014
    Publication date: June 25, 2015
    Inventors: Yuji IKEDA, Ryoji TSURUOKA
  • Publication number: 20150167625
    Abstract: The present invention addresses the issue of improving generation efficiency of plasma in relation to usage power in a plasma generation apparatus. The present invention is directed to a plasma generation apparatus provided with an electromagnetic wave emission antenna and a discharge electrode. The plasma generation apparatus includes a plasma control device that controls generation of plasma, and is characterized that the plasma control device causes the electromagnetic wave emission antenna to intermittently emit electromagnetic waves by way of a drive sequence control. Especially, the plasma control device may preferably control an oscillating frequency, a power, output timing, a pulse width, a pulse cycle, and a duty cycle of the electromagnetic waves.
    Type: Application
    Filed: February 25, 2015
    Publication date: June 18, 2015
    Inventor: Yuji IKEDA
  • Patent number: 9030252
    Abstract: A high frequency switch device includes a branch transmission line corresponding to each output terminal provided with a switching part. In the branch transmission line, the switching part includes a transmission side diode provided in such a manner that a cathode thereof is arranged on a side of an input terminal 41 and an anode thereof is arranged on a side of the output terminal, and a ground side diode provided in such a manner that a cathode thereof is grounded and an anode thereof is electrically connected between the output terminal and the transmission side diode in the branch transmission line. The branch transmission line includes a first capacitor and a second capacitor on the side of the output terminal from the transmission side diode in such a manner that the anode of the ground side diode is connected between the first capacitor and the second capacitor.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: May 12, 2015
    Assignee: Imagineering, Inc.
    Inventors: Minoru Makita, Yuji Ikeda
  • Publication number: 20150108714
    Abstract: A sheet thickness detector incorporated in an image forming apparatus includes a sheet conveying member to rotate and convey a sheet in a sheet conveyance direction, a driven sheet conveying member to contact the sheet conveying member and form at least one first transfer nip therebetween in a lateral direction and to displace by an amount equivalent to a thickness of the sheet passing through the first transfer nip and rotated with the sheet conveying member in the sheet conveyance direction, a displacement member to contact the sheet conveying member and form a second transfer nip smaller than the first transfer nip in the lateral direction and to displace by an amount equivalent to the thickness of the sheet passing through the second transfer nip and supported at a support member, and a displacement amount detector to detect an amount of displacement of the displacement member.
    Type: Application
    Filed: December 31, 2014
    Publication date: April 23, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Yuu WAKABAYASHI, Ryo TAKENAKA, Masashi SATOH, Shingo NISHIZAKI, Yusuke OZAKI, Yuji IKEDA, Hiroshi OKAMURA, Naohiro FUNADA, Tomohide KONDOH
  • Publication number: 20150085281
    Abstract: The objective of the present invention is to reduce the dispersion of a powdered substance, which is the target substance, during the analysis period in an analyzing device that analyzes the target substance by analyzing the light originated from the substance which is in the plasma state. The present invention relates to an analyzing device including a plasma generation means which generates plasma in the space and maintains plasma using the energy of EM radiation emitted from a radiation antenna; and an optical analysis means which analyzes a target substance by analyzing the plasma light generated from target substance of plasma state in the plasma area during the plasma maintenance period where the plasma is maintained by the plasma generation means using the energy of EM radiation. The plasma generation means emits the EM radiation from the radiation antenna in continuous waves during the plasma maintenance period.
    Type: Application
    Filed: September 10, 2012
    Publication date: March 26, 2015
    Applicant: IMAGINEERING, INC.
    Inventors: Yuji Ikeda, Ryoji Tsuruoka
  • Publication number: 20150068479
    Abstract: To simplify a configuration of a plasma generation device that generates plasma by means of an electromagnetic wave using thermal electrons as a trigger. The plasma generation device 30 includes: a thermal electron emission member 14 that emits thermal electrons when heated; a heating device 13 that heats the thermal electron emission member 14 by means of an electromagnetic wave; and an electric field concentration member 61 that concentrates in the vicinity of the thermal electron emission member 14 an electric field of the electromagnetic wave generated by the heating device 13. The plasma generation device 30, while causing the heating device 13 to heat the thermal electron emission member 14, causes the electric field concentration member 61 to concentrate the electric field of the electromagnetic wave in the vicinity of the thermal electron emission member 14, thereby generating plasma in the vicinity of the thermal electron emission member 14.
    Type: Application
    Filed: September 12, 2012
    Publication date: March 12, 2015
    Applicant: IMAGINEERING, INC.
    Inventor: Yuji Ikeda
  • Publication number: 20150064073
    Abstract: The objective of the present invention is to reduce the loss in functionality due to the burn-out of micro-coils in a heating device, which uses micro-coils formed of carbon or molecules that include carbon as a principal component for heating a target object located in a space where high-temperature gases flow. The present invention relates to a heating device comprising: a heat producing layer having a micro-coil formed of carbon or molecules that include carbon as a principal component, where the heat producing layer is installed together with the target object located in a target space where high-temperature gases flow; and an electromagnetic (EM)-wave-emitting device that emits EM radiation into the target space. The target object is heated by producing heat in the micro-coil by EM radiation from the EM wave emitting device emitted to the target space. The heating device further comprises a covering layer, which coats the entirety of the heat producing layer.
    Type: Application
    Filed: September 12, 2012
    Publication date: March 5, 2015
    Applicant: IMAGINEERING, INC.
    Inventor: Yuji Ikeda
  • Patent number: 8950750
    Abstract: A sheet thickness detector incorporated in an image forming apparatus includes a sheet conveying member to rotate and convey a sheet in a sheet conveyance direction, a driven sheet conveying member to contact the sheet conveying member and form at least one first transfer nip therebetween in a lateral direction and to displace by an amount equivalent to a thickness of the sheet passing through the first transfer nip and rotated with the sheet conveying member in the sheet conveyance direction, a displacement member to contact the sheet conveying member and form a second transfer nip smaller than the first transfer nip in the lateral direction and to displace by an amount equivalent to the thickness of the sheet passing through the second transfer nip and supported at a support member, and a displacement amount detector to detect an amount of displacement of the displacement member.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: February 10, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuu Wakabayashi, Ryo Takenaka, Masashi Satoh, Shingo Nishizaki, Yusuke Ozaki, Yuji Ikeda, Hiroshi Okamura, Naohiro Funada, Tomohide Kondoh